Blocking of data exchange for protecting a near field communication

摘要

The invention relates to a mobile communication terminal (1) for exchanging data (11) with a second communication terminal (9), which is physically distanced from the first communication terminal (1), via a first communication network (7). The communication terminal (1) has a first communication module (2) for the data exchange (11) with the second communication terminal (9) via the first communication network (7); a second communication module (3) for the data exchange (12) with a portable data carrier (5) via a second communication network (8); and a central control unit (4) for controlling a data exchange between the first communication module (2) and the second communication module (3). The central control unit (4) has a blocking unit (40), said blocking unit (40) blocking (14) the data exchange (11) via the first communication network (7) as soon as the central control unit (4) registers a data exchange (12) via the second communication network (8).